Company lists · Data refreshed September 2026
Top 25 Green certification companies based in Germany
RevenueBase identified 74 green certification companies headquartered in Germany as of September 2026 and tracks 666 professional contacts across them, including 227 with verified work emails. Berlin is the largest hub.
This list covers green certification companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest green certification companies based in Germany
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 109 contacts → | ||||
Indirect evidence “The German Sustainable Building Council (DGNB) is a central knowledge platform for sustainable building.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 71 contacts → | ||||
Partial evidence “For almost 30 years, Ecocert supports companies in implementing and promoting sustainable practices with certification and training.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 70 contacts → | ||||
Partial evidence “Our name: CERES - CERtification of Environmental Standards refers to "Ceres", the ancient Roman goddess of agriculture, who was equivalent to the Greek goddess Demeter.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 49 contacts → | ||||
Indirect evidence “Wir, die ABCERT AG sind die führende Kontrollstelle in Deutschland.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 35 contacts → | ||||
Partial evidence “GSCI Services has been incepted with a vision to provide access to global sustainability certification.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 30 contacts → | ||||
Indirect evidence “OmniCert is an environmental services company based out of Bad Abbach, Bavaria, Germany.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 23 contacts → | ||||
Indirect evidence “WIR SIND TEAM IBAK Seit gut 13 Jahren treiben wir mit Können und großer Begeisterung die Nachhaltigkeit im Bauwesen voran.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 23 contacts → | ||||
Partial evidence “GFA Certification GmbH, based in Hamburg, Germany, is one of the leading and highly specialized certification bodies in the fields of sustainability certification.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 12 contacts → | ||||
Partial evidence “HOINKA GmbH ist ein Unternehmen, das sich auf Leistungen rund um das nachhaltige Bauen (Green Building) spezialisiert hat.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 9 contacts → | ||||
Indirect evidence “Wir sind ein qualifizierter Dienstleister für die Umsetzung der naturschutzrechtlichen Eingriffsregelung und stehen Ihnen als landesweiter Vermittler von Ökopunkten…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Partial evidence “Die verico SCE offers certification, verification and consulting services related to the EU-ETS, energy management systems (ISO & ISO 16247 ), environmental management systems…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 8 contacts → | ||||
Indirect evidence “REDcert wurde am 26.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Partial evidence “GREEN BRANDS ist eine internationale, unabhängige und selbständige Markenbewertungs-Organisation mit Hauptsitz in Veitsbronn (Deutschland) und Büros in Hamburg, Österreich…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “Wir sind eine unparteiische Zertifizierungsstelle mit Sitz in Erfurt – im grünen Herzen Deutschlands.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 contacts → | ||||
Strong evidence “Green Business Certification Inc.(GBCI) is the world's leading sustainability and building health certification body.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Indirect evidence “Impressum: Datenschutz: Wir unterstützen Unternehmen bei der Erfüllung rechtlicher Auflagen in den Bereichen Umwelt- und Immissionsschutz, Nachhaltigkeit, Energie…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 contacts → | ||||
Indirect evidence “PG Nord mbH – über uns Als ein modernes und innovatives Unternehmen haben wir uns in den Bereichen Prüfen, Messen, Bewerten und Zertifizieren von energetischen und ökologischen…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 contacts → | ||||
Indirect evidence “We are convinced by the principles of sustainability!” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Indirect evidence “In einer Welt, in der nachhaltiges Handeln und verantwortungsvolle Unternehmensführung immer wichtiger werden, stehen wir Ihnen als Experten zur Seite.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 contacts → | ||||
Indirect evidence “Wir zertifizieren klimabewusste Websites mit dem °Cleaner-Web-Siegel.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 contacts → | ||||
Partial evidence “Green Building Zertifizierungen auf höchstem Niveau seit über 12 Jahren.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 3 contacts → | ||||
Indirect evidence “Nachhaltes Bauen messbar machen - durch Zertifizierungen nach DGNB, LEED, BREEAM, WELL, WiredScore, SmartScore - für Neubauten, Bestandsprojekte und Quartiere.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “Als Nachhaltigkeitsberatung begleiten wir Unternehmen und Organisationen aller Branchen dabei, ihre Verantwortung für Mensch und Umwelt systematisch im Geschäftsmodell zu…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence “Our work for companies, organizations and municipalities is based on two pillars: We create greenhouse gas and life cycle assessments to identify the environmental impacts of…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Indirect evidence “For 3 years, Root Now Sustainability has guided companies in achieving climate-neutral success.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: green certification companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names green certification companies.
- Partial evidence
- Its own public description names part of green certification companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name green certification companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 74 green certification companies based in Germany
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Green certification companies based in Germany at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 74 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among green certification companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Germany whose own description of what they do matches “green certification companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names green certification companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among green certification companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 227 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names green certification companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many green certification companies are there based in Germany?
RevenueBase identified 74 green certification companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Dgnb German Sustainable Building Council, headquartered in Stuttgart, tops this list with the largest team on record.
Which city has the most green certification companies?
Berlin leads with 9 headquartered companies, followed by Hamburg (7) and Stuttgart (4).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 227 verified decision-maker contacts tracked across these 74 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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